CVE-2025-71385: Netdata reflected XSS in ilove.svg endpoint

CVE-2025-71385 · Severity: medium · CVSS 6.1 · Published 2026-07-02

Netdata, a real-time infrastructure monitoring tool, contained a security flaw in its SVG image generation service. An attacker could send a specially crafted link to a user; if clicked, the link would execute malicious code within the user's web browser under the context of the Netdata application. This could allow an attacker to perform unauthorized actions or steal sensitive session information from the monitoring dashboard.

Technologies: Netdata. Vendors: Netdata.

Quick answers

Is CVE-2025-71385 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-71385 being exploited in the wild.
How severe is CVE-2025-71385?
Medium severity, with a CVSS score of 6.1, published 2 July 2026.
Which products and versions are affected?
Netdata before 2.3.1.
Is there a fix for CVE-2025-71385?
A patch was published on 2025-03-20: Fix merged into master branch via PR #19919 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2025-71385 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2025-71385?
Check whether you run Netdata at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A reflected cross-site scripting (XSS) vulnerability exists in Netdata versions prior to 2.3.1. The 'love' query parameter in the api/v2/ilove.svg and api/v3/ilove.svg endpoints is reflected verbatim into a generated SVG document's text element without proper HTML or XML escaping. Because these endpoints are served with the 'image/svg+xml' content type and are accessible without authentication (HTTP_ACL_NOCHECK), an attacker can execute arbitrary JavaScript in a victim's browser by inducing them to click a malicious URL. The vulnerability was addressed in version 2.3.1 by completely removing the affected 'ilove' endpoints.

Affected products

  • Netdata Netdata before 2.3.1

Timeline

  • 2025-03-20: patched: Fix merged into master branch via PR #19919
  • 2025-03-24: advisory: Release v2.3.1 published
  • 2026-07-02: disclosed: CVE-2025-71385 published to NVD

References

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